"The wireless music box has no imaginable commercial value. Who would pay for a message sent to nobody in particular?"
David Sarnoff, American radio pioneer ; 1921
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| Number | Title | Issue Date |
| 6985651 | Thermal actuator with offset beam segment neutral axes and an optical waveguide switch including the same A thermal actuator comprises a substantially straight beam. The beam has a beam length and a beam mid-point. The beam comprises a plurality of beam segments with beam segment lengths. Each beam segment has a beam segment neutral axis, thus forming a corresponding pl... | 01/10/2006 |
| 6985650 | Thermal actuator and an optical waveguide switch including the same A thermal actuator comprises a substantially straight beam. The beam has a beam length and a beam mid-point. The beam comprises a plurality of beam segments. Each beam segment has a beam segment width, the beam thus forming a corresponding plurality of beam segment ... | 01/10/2006 |
| 6983088 | Thermal actuator and an optical waveguide switch including the same A thermal actuator comprises a plurality of substantially straight and parallel beams arranged to form a beam array. The midpoint of each beam is attached or coupled to an orthogonal coupling beam. Each array beam has a beam heating parameter with a corresponding be... | 01/03/2006 |
| 6819216 | Thermostat A thermostat includes a wall plate unitarily molded of thermoplastic resin, a first metal plate holding a temperature sensing section, and a second metal plate holding a cam shaft. A fulcrum of a lever and a fulcrum of adjusting plate are protected by the wall plate... | 11/16/2004 |
| 6737952 | Combined pressure responsive electrical switch and temperature sensor device A combined pressure responsive electrical switch and temperature sensor device (10, 10′) is shown comprising a base member (12) mounting an electrical switch actuatable by a pressure responsive snap-acting disc (16) attached to a port fitting ... | 05/18/2004 |
| 6496097 | Dual circuit temperature controlled switch A temperature responsive switch includes a housing, an actuator arm for movement in response to temperature conditions, a movable contact, and an adjustable contact connected to a auxiliary terminal for completing an auxiliary circuit. The movable contact... | 12/17/2002 |
| 6046666 | Thermal actuator A known thermal actuator includes a capsule, which contains a diaphragm controlling the position of a stem. A thermal expansion substance like wax is contained in the capsule which operates as a thermostat in a thermostatically controlled valve such as a ... | 04/04/2000 |
| 5015433 | Neutron activated switch A switch for reacting quickly to a neutron emission. A rod consisting of fissionable material is located inside a vacuum tight body. An adjustable contact is located coaxially at an adjustable distance from one end of the rod. Electrical leads are connect... | 05/14/1991 |
| 4880596 | Thermionic switched self-actuating reactor shutdown system A self-actuating reactor shutdown system incorporating a thermionic switched electromagnetic latch arrangement which is responsive to reactor neutron flux changes and to reactor coolant temperature changes. The system is self-actuating in that the sensing... | 11/14/1989 |
| 4770845 | Self-actuating reactor shutdown system A control system for the automatic or self-actuated shutdown or "scram" of a nuclear reactor. The system is capable of initiating scram insertion by a signal from the plant protection system or by independent action directly sensing reactor conditions of ... | 09/13/1988 |
| 4565920 | Fail safe thermal control device This invention relates generally to thermal control apparatus wherein a change in temperature is transmitted from a sensing bulb through a capillary to a control device. More particularly this invention is related to a novel, fail-safe control device for ... | 01/21/1986 |